diff options
| -rw-r--r-- | test/test_jsinterp.py | 28 | ||||
| -rw-r--r-- | yt_dlp/jsinterp.py | 6 |
2 files changed, 31 insertions, 3 deletions
diff --git a/test/test_jsinterp.py b/test/test_jsinterp.py index df92c8315..06840ed85 100644 --- a/test/test_jsinterp.py +++ b/test/test_jsinterp.py @@ -403,6 +403,34 @@ class TestJSInterpreter(unittest.TestCase): self._test(jsi, [''], args=['', '-']) self._test(jsi, [], args=['', '']) + def test_slice(self): + self._test('function f(){return [0, 1, 2, 3, 4, 5, 6, 7, 8].slice()}', [0, 1, 2, 3, 4, 5, 6, 7, 8]) + self._test('function f(){return [0, 1, 2, 3, 4, 5, 6, 7, 8].slice(0)}', [0, 1, 2, 3, 4, 5, 6, 7, 8]) + self._test('function f(){return [0, 1, 2, 3, 4, 5, 6, 7, 8].slice(5)}', [5, 6, 7, 8]) + self._test('function f(){return [0, 1, 2, 3, 4, 5, 6, 7, 8].slice(99)}', []) + self._test('function f(){return [0, 1, 2, 3, 4, 5, 6, 7, 8].slice(-2)}', [7, 8]) + self._test('function f(){return [0, 1, 2, 3, 4, 5, 6, 7, 8].slice(-99)}', [0, 1, 2, 3, 4, 5, 6, 7, 8]) + self._test('function f(){return [0, 1, 2, 3, 4, 5, 6, 7, 8].slice(0, 0)}', []) + self._test('function f(){return [0, 1, 2, 3, 4, 5, 6, 7, 8].slice(1, 0)}', []) + self._test('function f(){return [0, 1, 2, 3, 4, 5, 6, 7, 8].slice(0, 1)}', [0]) + self._test('function f(){return [0, 1, 2, 3, 4, 5, 6, 7, 8].slice(3, 6)}', [3, 4, 5]) + self._test('function f(){return [0, 1, 2, 3, 4, 5, 6, 7, 8].slice(1, -1)}', [1, 2, 3, 4, 5, 6, 7]) + self._test('function f(){return [0, 1, 2, 3, 4, 5, 6, 7, 8].slice(-1, 1)}', []) + self._test('function f(){return [0, 1, 2, 3, 4, 5, 6, 7, 8].slice(-3, -1)}', [6, 7]) + self._test('function f(){return "012345678".slice()}', '012345678') + self._test('function f(){return "012345678".slice(0)}', '012345678') + self._test('function f(){return "012345678".slice(5)}', '5678') + self._test('function f(){return "012345678".slice(99)}', '') + self._test('function f(){return "012345678".slice(-2)}', '78') + self._test('function f(){return "012345678".slice(-99)}', '012345678') + self._test('function f(){return "012345678".slice(0, 0)}', '') + self._test('function f(){return "012345678".slice(1, 0)}', '') + self._test('function f(){return "012345678".slice(0, 1)}', '0') + self._test('function f(){return "012345678".slice(3, 6)}', '345') + self._test('function f(){return "012345678".slice(1, -1)}', '1234567') + self._test('function f(){return "012345678".slice(-1, 1)}', '') + self._test('function f(){return "012345678".slice(-3, -1)}', '67') + if __name__ == '__main__': unittest.main() diff --git a/yt_dlp/jsinterp.py b/yt_dlp/jsinterp.py index 851d4dc7b..ba059babb 100644 --- a/yt_dlp/jsinterp.py +++ b/yt_dlp/jsinterp.py @@ -709,9 +709,9 @@ class JSInterpreter: obj.reverse() return obj elif member == 'slice': - assertion(isinstance(obj, list), 'must be applied on a list') - assertion(len(argvals) == 1, 'takes exactly one argument') - return obj[argvals[0]:] + assertion(isinstance(obj, (list, str)), 'must be applied on a list or string') + assertion(len(argvals) <= 2, 'takes between 0 and 2 arguments') + return obj[slice(*argvals, None)] elif member == 'splice': assertion(isinstance(obj, list), 'must be applied on a list') assertion(argvals, 'takes one or more arguments') |